using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class StringCombinerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1: Empty list
        List<string> test1Input = new List<string>();
        string test1Expected = "";
        string test1Result = StringCombiner.JoinWithSpaces(test1Input);
        if (test1Result != test1Expected)
        {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2: List with multiple words
        List<string> test2Input = new List<string> { "Hello", "world", "!" };
        string test2Expected = "Hello world !";
        string test2Result = StringCombiner.JoinWithSpaces(test2Input);
        if (test2Result != test2Expected)
        {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3: List with multiple words
        List<string> test3Input = new List<string> { "Quick", "brown", "fox" };
        string test3Expected = "Quick brown fox";
        string test3Result = StringCombiner.JoinWithSpaces(test3Input);
        if (test3Result != test3Expected)
        {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4: List with a single word
        List<string> test4Input = new List<string> { "SingleWord" };
        string test4Expected = "SingleWord";
        string test4Result = StringCombiner.JoinWithSpaces(test4Input);
        if (test4Result != test4Expected)
        {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5: List with multiple words
        List<string> test5Input = new List<string> { "A", "B", "C", "D" };
        string test5Expected = "A B C D";
        string test5Result = StringCombiner.JoinWithSpaces(test5Input);
        if (test5Result != test5Expected)
        {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed successfully.");
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class StringCombiner
{
    public static string JoinWithSpaces(List<string> words)
    {
        return string.Join(" ", words);
    }
    )) == "Hello world !");
        Debug.Assert(JoinWithSpaces(new List<string>(new string[] { "Quick", "brown", "fox" })) == "Quick brown fox");
        Console.WriteLine("All tests passed successfully.");
    }
}

你好呀！我正在做一个项目，需要将一堆单词组合在一起，但要加点变化。我不仅想要连接这些单词，还需要在每个单词之间添加一个空格。你能帮我写一个用C#实现的程序吗？例如，如果我提供一个单词列表，如"Hello"、"world"和"!"，程序应该返回"Hello world !"。程序必须能处理我给的任何单词列表，包括空列表，这种情况下应该返回一个空字符串。哦，还有，我们要确保使用最新和最棒的编程实践，所以请包含必要的导入，并使代码尽可能整洁！

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class StringCombiner
{
    public static string JoinWithSpaces(List<string> words)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class CharacterFrequencyAnalyzerTest
{
    static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test case 1
        Dictionary<char, int> result1 = CharacterFrequencyAnalyzer.MostFrequentChars("a b c a");
        Dictionary<char, int> expected1 = new Dictionary<char, int> { { 'a', 2 } };
        allTestsPassed &= DictionaryComparer(result1, expected1);

        // Test case 2
        Dictionary<char, int> result2 = CharacterFrequencyAnalyzer.MostFrequentChars("d e f d e");
        Dictionary<char, int> expected2 = new Dictionary<char, int> { { 'd', 2 }, { 'e', 2 } };
        allTestsPassed &= DictionaryComparer(result2, expected2);

        // Test case 3
        Dictionary<char, int> result3 = CharacterFrequencyAnalyzer.MostFrequentChars("g h i");
        Dictionary<char, int> expected3 = new Dictionary<char, int> { { 'g', 1 }, { 'h', 1 }, { 'i', 1 } };
        allTestsPassed &= DictionaryComparer(result3, expected3);

        // Test case 4
        Dictionary<char, int> result4 = CharacterFrequencyAnalyzer.MostFrequentChars("x y z x y");
        Dictionary<char, int> expected4 = new Dictionary<char, int> { { 'x', 2 }, { 'y', 2 } };
        allTestsPassed &= DictionaryComparer(result4, expected4);

        // Test case 5
        Dictionary<char, int> result5 = CharacterFrequencyAnalyzer.MostFrequentChars("");
        Dictionary<char, int> expected5 = new Dictionary<char, int>();
        allTestsPassed &= DictionaryComparer(result5, expected5);

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed.");
            return 0;
        }
        else
        {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }

    static bool DictionaryComparer(Dictionary<char, int> dict1, Dictionary<char, int> dict2)
    {
        if (dict1.Count != dict2.Count) return false;
        foreach (var pair in dict1)
        {
            if (!dict2.ContainsKey(pair.Key) || dict2[pair.Key] != pair.Value)
            {
                return false;
            }
        }
        return true;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class CharacterFrequencyAnalyzer
{
    public static Dictionary<char, int> MostFrequentChars(string input)
    {
        Dictionary<char, int> charCount = new Dictionary<char, int>();
        Dictionary<char, int> result = new Dictionary<char, int>();
        int highestCount = 0;
        foreach (char c in input)
        {
            if (c != ' ')
            {
                if (!charCount.ContainsKey(c))
                {
                    charCount[c] = 0;
                }
                charCount[c]++;
                highestCount = Math.Max(highestCount, charCount[c]);
            }
        }
        foreach (KeyValuePair<char, int> pair in charCount)
        {
            if (pair.Value == highestCount)
            {
                result.Add(pair.Key, pair.Value);
            }
        }
        return result;
    }
     });
        TestFunction("d e f d e", new Dictionary<char, int> { { 'd', 2 }, { 'e', 2 } });
        TestFunction("g h i", new Dictionary<char, int> { { 'g', 1 }, { 'h', 1 }, { 'i', 1 } });
    }
    static void TestFunction(string input, Dictionary<char, int> expectedOutput)
    {
        var result = MostFrequentChars(input);
        if (result.Count == expectedOutput.Count && !DictionaryComparer(result, expectedOutput))
        {
            Console.WriteLine($"Test failed for input: {input}");
        }
        else
        {
            Console.WriteLine($"Test passed for input: {input}");
        }
    }
    static bool DictionaryComparer(Dictionary<char, int> dict1, Dictionary<char, int> dict2)
    {
        foreach (var pair in dict1)
        {
            if (!dict2.ContainsKey(pair.Key) || dict2[pair.Key] != pair.Value)
            {
                return false;
            }
        }
        return true;
    }
}

想象一下，你正在开发一个文本分析工具，需要找出给定字符串中出现频率最高的字符（不包括空格）。你的任务是编写一个C#程序，该程序接受由空格分隔的小写字母字符串，并返回一个字典。这个字典应包含出现频率最高的字符及其对应的次数。如果有多个字符共享最高频率，则字典应包含所有这些字符。

例如：
- 如果输入为 "m n o m"，你的程序应返回一个包含 {"m", 2} 的字典。
- 对于输入 "x y z x y"，应返回 {"x", 2}, {"y", 2}。
- 对于 "a a a b"，应返回 {"a", 3}。

确保你的解决方案是自包含的，并导入所有必要的包。同时，包括一个函数来验证你的解决方案在提供的数据点上的正确性。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class CharacterFrequencyAnalyzer
{
    public static Dictionary<char, int> MostFrequentChars(string input)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class ScoreNormalizerTest
{
    static void Main(string[] args)
    {
        int result = RunTests();
        Environment.Exit(result);
    }

    static int RunTests()
    {
        List<int> input1 = new List<int> { 10, 20, 30, 40, 50 };
        List<int> expected1 = new List<int> { 0, 25, 50, 75, 100 };
        if (!ScoreNormalizer.NormalizeScores(input1).SequenceEqual(expected1))
        {
            Console.WriteLine("Test 1 Failed");
            return -1;
        }

        List<int> input2 = new List<int> { 5, 10, 15, 20, 25 };
        List<int> expected2 = new List<int> { 0, 25, 50, 75, 100 };
        if (!ScoreNormalizer.NormalizeScores(input2).SequenceEqual(expected2))
        {
            Console.WriteLine("Test 2 Failed");
            return -1;
        }

        List<int> input3 = new List<int> { 100, 200, 300, 400, 500 };
        List<int> expected3 = new List<int> { 0, 25, 50, 75, 100 };
        if (!ScoreNormalizer.NormalizeScores(input3).SequenceEqual(expected3))
        {
            Console.WriteLine("Test 3 Failed");
            return -1;
        }

        List<int> input4 = new List<int> { 1, 2, 3, 4, 5 };
        List<int> expected4 = new List<int> { 0, 25, 50, 75, 100 };
        if (!ScoreNormalizer.NormalizeScores(input4).SequenceEqual(expected4))
        {
            Console.WriteLine("Test 4 Failed");
            return -1;
        }

        Console.WriteLine("All tests passed.");
        return 0;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class ScoreNormalizer
{
    public static List<int> NormalizeScores(List<int> scores)
    {
        if (scores == null || scores.Count < 2)
        {
            throw new ArgumentException("Scores list must contain at least two elements.");
        }
        int minScore = scores.Min();
        int maxScore = scores.Max();
        int range = maxScore - minScore;
        List<int> normalizedScores = scores.Select(score =>
            (int)(((score - minScore) / (float)range) * 100)).ToList();
        return normalizedScores;
    }
    ;
        List<int> normalizedScores = NormalizeScores(testScores);
        Console.WriteLine("Normalized Scores: " + String.Join(", ", normalizedScores));
        CheckFunction();
    }
    static void CheckFunction()
    {
        List<int> inputScores = new List<int> { 10, 20, 30, 40, 50 };
        List<int> expectedOutput = new List<int> { 0, 25, 50, 75, 100 };
        List<int> actualOutput = NormalizeScores(inputScores);
        if (actualOutput.SequenceEqual(expectedOutput))
        {
            Console.WriteLine("The normalization function works correctly.");
        }
        else
        {
            Console.WriteLine("There is an issue with the normalization function.");
        }
    }
}

想象一下，你有一组游戏分数，你想将这些分数进行归一化处理，使它们的范围从0到100，其中集合中的最低分变为0，最高分变为100。这样，你可以轻松比较不同游戏的分数，而不管它们原本的评分系统如何。你能编写一个C#方法，该方法接受一个表示游戏分数的整数列表，并返回一个新的整数列表，其中每个分数都被归一化到这个0到100的范围吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ScoreNormalizer
{
    public static List<int> NormalizeScores(List<int> scores)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class UniqueIDProcessorTest
{
    public static int Main(string[] args)
    {
        var testCases = new Dictionary<List<int>, List<int>>()
        {
            { new List<int>{1, 2, 3, 2, 4}, new List<int>{1, 2, 3, 4} },
            { new List<int>{5, 5, 6, 7, 8, 8}, new List<int>{5, 6, 7, 8} },
            { new List<int>{9, 10, 11, 12, 12, 12, 13}, new List<int>{9, 10, 11, 12, 13} },
            { new List<int>{1, 1, 1, 1}, new List<int>{1} },
            { new List<int>{}, new List<int>{} }
        };

        int testResult = 0;

        foreach (var testCase in testCases)
        {
            var output = UniqueIDProcessor.FilterUniqueIDs(testCase.Key);
            if (Enumerable.SequenceEqual(output, testCase.Value))
            {
                Console.WriteLine("Test Passed");
            }
            else
            {
                Console.WriteLine("Test Failed");
                testResult = -1;
            }
        }

        return testResult;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class UniqueIDProcessor
{
    public static List<int> FilterUniqueIDs(List<int> userIds)
    {
        HashSet<int> seen = new HashSet<int>();
        List<int> result = new List<int>();
        foreach (var id in userIds)
        {
            if (!seen.Contains(id))
            {
                result.Add(id);
                seen.Add(id);
            }
        }
        return result;
    }
    public static void Check()
    {
        var testCases = new Dictionary<List<int>, List<int>>()
        {
            { new List<int>{1, 2, 3, 2, 4}, new List<int>{1, 3, 4} },
            { new List<int>{5, 5, 6, 7, 8, 8}, new List<int>{5, 6, 7, 8} },
            { new List<int>{9, 10, 11, 12, 12, 12, 13}, new List<int>{9, 10, 11, 12, 13} }
        };
        foreach (var testCase in testCases)
        {
            var output = FilterUniqueIDs(testCase.Key);
            if (Enumerable.SequenceEqual(output, testCase.Value))
            {
                Console.WriteLine("Test Passed");
            }
            else
            {
                Console.WriteLine("Test Failed");
            }
        }
    }

}

想象一下你正在进行一个需要处理表示为整数的用户ID列表的项目。然而，由于数据收集过程中的一些错误，一些ID被重复了。你的任务是编写一个C#方法，该方法接受这些ID的列表并返回一个删除所有重复项的新列表。重要的是，列表中唯一ID的原始顺序必须被保留。你能设计一个方法来有效地解决这个问题吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class UniqueIDProcessor
{
    public static List<int> FilterUniqueIDs(List<int> userIds)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class DataAnalyzerTest
{
    public static int Main()
    {
        bool allTestsPassed = true;

        // Test Case 1
        int result1 = DataAnalyzer.FindDescendingIndex(new int[]{5, 7, 10, 6, 12});
        if (result1 != 3)
        {
            Console.WriteLine("Test 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        int result2 = DataAnalyzer.FindDescendingIndex(new int[]{1, 2, 3});
        if (result2 != -1)
        {
            Console.WriteLine("Test 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        int result3 = DataAnalyzer.FindDescendingIndex(new int[]{});
        if (result3 != -1)
        {
            Console.WriteLine("Test 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        int result4 = DataAnalyzer.FindDescendingIndex(new int[]{10, 9, 8, 7, 6, 5});
        if (result4 != 5)
        {
            Console.WriteLine("Test 4 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed.");
            return 0;
        }
        else
        {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class DataAnalyzer
{
    public static int FindDescendingIndex(int[] numbers)
    {
        if (numbers.Length == 0) return -1;
        for (int i = numbers.Length - 1; i > 0; i--)
        {
            if (numbers[i] < numbers[i - 1])
            {
                return i;
            }
        }
        return -1;
    }
    public static void Check()
    {
        Console.WriteLine(FindDescendingIndex(new int[]{5, 7, 10, 6, 12}) == 3 ? "Test 1 Passed" : "Test 1 Failed");
        Console.WriteLine(FindDescendingIndex(new int[]{1, 2, 3}) == -1 ? "Test 2 Passed" : "Test 2 Failed");
        Console.WriteLine(FindDescendingIndex(new int[]{}) == -1 ? "Test 3 Passed" : "Test 3 Failed");
        Console.WriteLine(FindDescendingIndex(new int[]{10, 9, 8, 7, 6, 5}) == 5 ? "Test 4 Passed" : "Test 4 Failed");
    }
}
class Program
{

}

假设你正在开发一个数据分析工具，并且你需要在数据集中找到特定模式。具体来说，你在寻找一个列表中最后一个位置，该位置的数字小于其前一个数字。编写一个C#方法，该方法接受一个整数数组作为输入，并返回最后一个比其前一个元素小的元素的索引。如果所有元素都是升序排列的或者数组为空，则该方法应返回-1。记住，数组中不会包含任何重复值。

例如，如果输入数组是`[5, 7, 10, 6, 12]`，该方法应该返回`3`，因为索引3处的元素（即`6`）小于索引2处的元素（即`10`）。如果输入数组是`[1, 2, 3]`，该方法应该返回`-1`，因为没有一个元素小于其前一个元素。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DataAnalyzer
{
    public static int FindDescendingIndex(int[] numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class FinancialCalculatorTest {
    public static void RunTests() {
        bool allTestsPassed = true;

        // Test case 1
        allTestsPassed &= FinancialCalculator.RoundAwayFromZero("10") == 10;
        // Test case 2
        allTestsPassed &= FinancialCalculator.RoundAwayFromZero("15.3") == 15;
        // Test case 3
        allTestsPassed &= FinancialCalculator.RoundAwayFromZero("14.5") == 15;
        // Test case 4
        allTestsPassed &= FinancialCalculator.RoundAwayFromZero("-14.5") == -15;
        // Test case 5
        allTestsPassed &= FinancialCalculator.RoundAwayFromZero("-14.4") == -14;

        if (allTestsPassed) {
            Console.WriteLine("All tests passed.");
            Environment.Exit(0);
        } else {
            Console.WriteLine("Some tests failed.");
            Environment.Exit(-1);
        }
    }

    static void Main(string[] args) {
        RunTests();
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class FinancialCalculator {
    public static long RoundAwayFromZero(string valueStr) {
        decimal value = decimal.Parse(valueStr);
        decimal fractionPart = value % 1;
        if (value > 0) {
            return fractionPart >= 0.5m ? (long)Math.Ceiling(value) : (long)Math.Floor(value);
        } else {
            return fractionPart <= -0.5m ? (long)Math.Floor(value) : (long)Math.Ceiling(value);
        }
    }
    public static void Check() {
        Console.WriteLine(RoundAwayFromZero("10") == 10 ? "Pass" : "Fail");
        Console.WriteLine(RoundAwayFromZero("15.3") == 15 ? "Pass" : "Fail");
        Console.WriteLine(RoundAwayFromZero("14.5") == 15 ? "Pass" : "Fail");
        Console.WriteLine(RoundAwayFromZero("-14.5") == -15 ? "Pass" : "Fail");
    }
}
class Program {

}

设想你正在开发一个金融应用程序，其中精确度至关重要，你需要实现一个功能，处理用户输入的表示货币值的字符串。你的任务是编写一个方法，将这些字符串表示转换为数字，然后将其四舍五入到最接近的整数。然而，有一个不同之处：如果数字正好在两个整数之间，你应始终将其朝远离零的方向四舍五入。这意味着，例如，“3.5”和“-3.5”都应该被四舍五入为“4”和“-4”，而不是通常的四舍五入规则。你能编写一个 C# 方法来实现这一点吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class FinancialCalculator
{
    public static long RoundAwayFromZero(string valueStr) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class TimeRotatorTest {
    public static void Main(string[] args) {
        int result = 0;

        // Test case 1
        string result1 = TimeRotator.RotateTime(1230, 2);
        if (result1 != "3012") {
            Console.WriteLine($"Test 1 Failed: Expected 3012, Got {result1}");
            result = -1;
        }

        // Test case 2
        string result2 = TimeRotator.RotateTime(1230, 5);
        if (result2 != "0321") {
            Console.WriteLine($"Test 2 Failed: Expected 0321, Got {result2}");
            result = -1;
        }

        // Test case 3
        string result3 = TimeRotator.RotateTime(9075, 3);
        if (result3 != "5907") {
            Console.WriteLine($"Test 3 Failed: Expected 5907, Got {result3}");
            result = -1;
        }

        // Test case 4
        string result4 = TimeRotator.RotateTime(9075, 4);
        if (result4 != "9075") {
            Console.WriteLine($"Test 4 Failed: Expected 9075, Got {result4}");
            result = -1;
        }

        // Test case 5
        string result5 = TimeRotator.RotateTime(1001, 1);
        if (result5 != "0011") {
            Console.WriteLine($"Test 5 Failed: Expected 0011, Got {result5}");
            result = -1;
        }

        if (result == 0) {
            Console.WriteLine("All tests passed!");
        }

        Environment.Exit(result);
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class TimeRotator {
    public static string RotateTime(int time, int positions) {
        string timeStr = time.ToString("D4");
        if (positions > 4) {
            char[] timeChars = timeStr.ToCharArray();
            Array.Reverse(timeChars);
            return new string(timeChars);
        } else {
            string rotatedTime = timeStr.Substring(positions) + timeStr.Substring(0, positions);
            return rotatedTime;
        }
    }
    public static void Check() {
        Debug.Assert(RotateTime(1230, 2) == "3012");
        Debug.Assert(RotateTime(1230, 5) == "0321");
        Debug.Assert(RotateTime(9075, 3) == "5907");
        Debug.Assert(RotateTime(9075, 4) == "9075");
        Console.WriteLine("All checks passed!");
    }

}

想象一下你正在开发一个具有独特功能的数字时钟应用程序：旋转时间显示。你想创建一个函数，该函数接收一个格式为 HHMM（整数）的时间，并将数字向左旋转指定的位数。如果旋转的位数超过时间的长度（4 位），则该函数应简单地返回原始时间的反序。例如，如果输入时间是 1230 并且你将其旋转 2 位，输出应为 3012。如果你将其旋转 5 位，因为 5 大于 4，输出应为 0321（1230 的反序）。

编写一个实现此功能的 C# 函数。确保你的代码是自包含的，并在开头导入所有必要的包。同时，包含一个检查函数，使用提供的数据点来验证你的解决方案的正确性。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TimeRotator
{
    public static string RotateTime(int time, int positions) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class DataProcessorTest
{
    public static int Main()
    {
        var testCases = new Dictionary<List<int>, List<int>>
        {
            { new List<int> { 1, 2, 3 }, new List<int> { 2, 4, 6 } },
            { new List<int> { 5, 0, -1 }, new List<int> { 10, 0, -2 } },
            { new List<int> { }, new List<int> { } },
            { new List<int> { -10, 15, 20 }, new List<int> { -20, 30, 40 } },
            { new List<int> { 100, 200, 300 }, new List<int> { 200, 400, 600 } }
        };

        int testResults = 0;

        foreach (var testCase in testCases)
        {
            var result = DataProcessor.DoubleElements(testCase.Key);
            var expectedResult = testCase.Value;
            Console.WriteLine($"Input: [{string.Join(", ", testCase.Key)}]");
            Console.WriteLine($"Expected Output: [{string.Join(", ", expectedResult)}]");
            Console.WriteLine($"Actual Output: [{string.Join(", ", result)}]");
            if (!result.SequenceEqual(expectedResult))
            {
                Console.WriteLine("Test Failed");
                testResults = -1;
            }
            else
            {
                Console.WriteLine("Test Passed");
            }
            Console.WriteLine();
        }

        return testResults;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class DataProcessor
{
    public static List<int> DoubleElements(List<int> numbers)
    {
        List<int> doubledNumbers = new List<int>();
        foreach (int number in numbers)
        {
            doubledNumbers.Add(number * 2);
        }
        return doubledNumbers;
    }
    public static void Check()
    {
        var testCases = new Dictionary<List<int>, List<int>>
        {
            { new List<int> { 1, 2, 3 }, new List<int> { 2, 4, 6 } },
            { new List<int> { 5, 0, -1 }, new List<int> { 10, 0, -2 } },
            { new List<int> { }, new List<int> { } }
        };
        foreach (var testCase in testCases)
        {
            var result = DoubleElements(testCase.Key);
            var expectedResult = testCase.Value;
            Console.WriteLine($"Input: [{string.Join(", ", testCase.Key)}]");
            Console.WriteLine($"Expected Output: [{string.Join(", ", expectedResult)}]");
            Console.WriteLine($"Actual Output: [{string.Join(", ", result)}]");
            Console.WriteLine(result.SequenceEqual(expectedResult) ? "Test Passed" : "Test Failed");
            Console.WriteLine();
        }
    }
}
class Program
{

}

想象一下，你正在用 C# 编写一个方法，该方法接收一个整数列表，并返回一个新列表，其中每个元素的值都翻倍。例如，如果输入列表是 `[1, 2, 3]`，那么输出应该是 `[2, 4, 6]`。编写一个执行此操作的方法。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DataProcessor
{
    public static List<int> DoubleElements(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System;

#<INSERT>

public class FinancialHelperTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test case 1: Regular amount with cents
        if (FinancialHelper.ExtractCents(123.456m) != 0.456m)
        {
            Console.WriteLine("Test case 1 failed.");
            allTestsPassed = false;
        }

        // Test case 2: Amount with no cents
        if (FinancialHelper.ExtractCents(100m) != 0m)
        {
            Console.WriteLine("Test case 2 failed.");
            allTestsPassed = false;
        }

        // Test case 3: Small amount with cents
        if (FinancialHelper.ExtractCents(0.99m) != 0.99m)
        {
            Console.WriteLine("Test case 3 failed.");
            allTestsPassed = false;
        }

        // Test case 4: Negative amount with cents
        if (FinancialHelper.ExtractCents(-123.456m) != -0.456m)
        {
            Console.WriteLine("Test case 4 failed.");
            allTestsPassed = false;
        }

        // Test case 5: Large amount with cents
        if (FinancialHelper.ExtractCents(987654321.123m) != 0.123m)
        {
            Console.WriteLine("Test case 5 failed.");
            allTestsPassed = false;
        }

        // Return 0 if all tests passed, -1 otherwise
        return allTestsPassed ? 0 : -1;
    }
}

using System;

public class FinancialHelper
{
    public static decimal ExtractCents(decimal amount)
    {
        // Get the fractional part by subtracting the integer part from the original amount
        decimal fractionalPart = amount - Math.Floor(amount);

        // Return the fractional part
        return fractionalPart;
    }
}

想象一下你正在开发一个金融应用程序，其中精度非常重要。你需要编写一个方法，该方法接收一个表示货币值的浮点数，并提取该金额中的“分”部分。例如，如果你有 $123.456，你要隔离并返回 0.456 部分。你将如何在 C# 中设计一个方法来完成此任务，确保其清晰、简洁和高效？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class FinancialHelper
{
public class FinancialHelper
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class ScoreAnalyzerTest
{
    public static int Main(string[] args)
    {
        var testCases = new List<Tuple<List<int>, int?>>()
        {
            Tuple.Create(new List<int> { 10, 20, 20, 30, 40, 40 }, 30 as int?),
            Tuple.Create(new List<int> { 5, 5, 5, 5 }, null as int?),
            Tuple.Create(new List<int> { 100, 100, 90 }, 90 as int?),
            Tuple.Create(new List<int> { 1 }, null as int?),
            Tuple.Create(new List<int> { 3, 1, 2 }, 2 as int?)
        };

        foreach (var testCase in testCases)
        {
            var result = ScoreAnalyzer.FindRunnerUpScore(testCase.Item1);
            if (result != testCase.Item2)
            {
                Console.WriteLine($"Test failed for input {string.Join(", ", testCase.Item1)}: Expected {testCase.Item2}, but got {result}");
                return -1;
            }
        }

        Console.WriteLine("All tests passed.");
        return 0;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class ScoreAnalyzer
{
    public static int? FindRunnerUpScore(List<int> scores)
    {
        var runnerUpScore = scores.Distinct().OrderByDescending(score => score).Skip(1).FirstOrDefault();
        if (scores.Distinct().Count() < 2)
        {
            return null;
        }
        return runnerUpScore;
    }
    ;
        var runnerUp = FindRunnerUpScore(scores);
        Console.WriteLine(runnerUp.HasValue ? runnerUp.ToString() : "No runner-up score found.");
    }
}

想象一下，你正在完成一个涉及大量数据分析的项目，你遇到了需要从分数列表中找到第二高分的情况。你决定编写一个函数来高效地处理这个任务。你的函数应该接收一个表示分数的整数列表，并返回列表中第二高的分数。如果列表中没有足够的唯一分数来确定亚军分数，你的函数应该返回 `None` 以表示这一点。你能用 C# 写一个实现这一功能的函数吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ScoreAnalyzer
{
    public static int? FindRunnerUpScore(List<int> scores)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class DataAnalyzerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        List<int> input1 = new List<int> { 4, 2, 5, 1, 3 };
        List<int> expected1 = new List<int> { 4, 2, 2, 1, 1 };
        List<int> result1 = DataAnalyzer.CumulativeMin(input1);
        if (!result1.SequenceEqual(expected1))
        {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        List<int> input2 = new List<int> { 1, 1, 1, 1, 1 };
        List<int> expected2 = new List<int> { 1, 1, 1, 1, 1 };
        List<int> result2 = DataAnalyzer.CumulativeMin(input2);
        if (!result2.SequenceEqual(expected2))
        {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        List<int> input3 = new List<int> { 5, 4, 3, 2, 1 };
        List<int> expected3 = new List<int> { 5, 4, 3, 2, 1 };
        List<int> result3 = DataAnalyzer.CumulativeMin(input3);
        if (!result3.SequenceEqual(expected3))
        {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        List<int> input4 = new List<int> { 1, 2, 3, 4, 5 };
        List<int> expected4 = new List<int> { 1, 1, 1, 1, 1 };
        List<int> result4 = DataAnalyzer.CumulativeMin(input4);
        if (!result4.SequenceEqual(expected4))
        {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All test cases passed.");
            return 0;
        }
        else
        {
            Console.WriteLine("Some test cases failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class DataAnalyzer
{
    public static List<int> CumulativeMin(List<int> numbers)
    {
        if (numbers == null || numbers.Count == 0)
        {
            throw new ArgumentException("The input list cannot be null or empty.", nameof(numbers));
        }
        List<int> cumulativeMins = new List<int>();
        int currentMin = numbers[0];
        foreach (int number in numbers)
        {
            if (number < currentMin)
            {
                currentMin = number;
            }
            cumulativeMins.Add(currentMin);
        }
        return cumulativeMins;
    }
    ;
        List<int> cumulativeMins = CumulativeMin(exampleNumbers);
        Console.WriteLine("Cumulative minimums: " + string.Join(", ", cumulativeMins));
    }
}

想象你正在开发一个数据分析工具，需要实现一个功能，用于跟踪数字序列中的累积最小值。这意味着，对于列表中的每个元素，你需要找到从序列开始到包括该元素为止的最小数。你能编写一个实现此功能的 C# 方法吗？该方法应接收一个整数列表作为输入，并返回一个新列表，其中每个元素是到该点为止列表中找到的最小值。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DataAnalyzer
{
    public static List<int> CumulativeMin(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Globalization;

#<INSERT>

class HexToSpecialBinaryTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        string result1 = HexToSpecialBinary.HexadecimalToBinary("1A");
        if (result1 != "hx11010hx") {
            Console.WriteLine($"Test 1 Failed: Expected 'hx11010hx', but got '{result1}'");
            allTestsPassed = false;
        }

        // Test case 2
        string result2 = HexToSpecialBinary.HexadecimalToBinary("F");
        if (result2 != "hx1111hx") {
            Console.WriteLine($"Test 2 Failed: Expected 'hx1111hx', but got '{result2}'");
            allTestsPassed = false;
        }

        // Test case 3
        string result3 = HexToSpecialBinary.HexadecimalToBinary("10");
        if (result3 != "hx10000hx") {
            Console.WriteLine($"Test 3 Failed: Expected 'hx10000hx', but got '{result3}'");
            allTestsPassed = false;
        }

        // Test case 4
        string result4 = HexToSpecialBinary.HexadecimalToBinary("FF");
        if (result4 != "hx11111111hx") {
            Console.WriteLine($"Test 4 Failed: Expected 'hx11111111hx', but got '{result4}'");
            allTestsPassed = false;
        }

        // Test case 5
        string result5 = HexToSpecialBinary.HexadecimalToBinary("0");
        if (result5 != "hx0hx") {
            Console.WriteLine($"Test 5 Failed: Expected 'hx0hx', but got '{result5}'");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed!");
            return 0;
        } else {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Globalization;
class HexToSpecialBinary {
    public static string HexadecimalToBinary(string hexString) {
        string binaryStr = Convert.ToString(Convert.ToInt32(hexString, 16), 2);
        return $"hx{binaryStr}hx";
    }

}

想象一下，你在一个项目中需要频繁地将十六进制数字转换为一种特殊的二进制格式。你的任务是编写一个C#函数，该函数接受一个十六进制字符串作为输入，并将其转换为一个二进制字符串。然而，有一个小转折：生成的二进制字符串应该包含前缀和后缀“hx”。例如，如果输入是“A”，输出应该是“hx1010hx”。记住，输入将始终是有效的十六进制字符串，你应该考虑大写和小写字母。

你能编写一个完成这种转换的函数，并确保它以“hx”开头和结尾吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class HexToSpecialBinary
{
    public static string HexadecimalToBinary(string hexString) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text;
using System.Linq;

#<INSERT>

class TextFilterTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test case 1
        string input1 = "Hello123";
        string expected1 = "Hello";
        string result1 = TextFilter.FilterDigits(input1);
        if (result1 != expected1)
        {
            Console.WriteLine($"Test 1 Failed: Input = {input1}, Expected = {expected1}, Result = {result1}");
            allTestsPassed = false;
        }

        // Test case 2
        string input2 = "NoDigitsHere!";
        string expected2 = "NoDigitsHere!";
        string result2 = TextFilter.FilterDigits(input2);
        if (result2 != expected2)
        {
            Console.WriteLine($"Test 2 Failed: Input = {input2}, Expected = {expected2}, Result = {result2}");
            allTestsPassed = false;
        }

        // Test case 3
        string input3 = "1234567890";
        string expected3 = "";
        string result3 = TextFilter.FilterDigits(input3);
        if (result3 != expected3)
        {
            Console.WriteLine($"Test 3 Failed: Input = {input3}, Expected = {expected3}, Result = {result3}");
            allTestsPassed = false;
        }

        // Test case 4
        string input4 = "Mix4ed5TextWith6Digits7";
        string expected4 = "MixedTextWithDigits";
        string result4 = TextFilter.FilterDigits(input4);
        if (result4 != expected4)
        {
            Console.WriteLine($"Test 4 Failed: Input = {input4}, Expected = {expected4}, Result = {result4}");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed!");
            return 0;
        }
        else
        {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text;
using System.Linq;
class TextFilter
{
    public static string FilterDigits(string input)
    {
        StringBuilder filteredText = new StringBuilder();
        foreach (char c in input)
        {
            if (!char.IsDigit(c))
            {
                filteredText.Append(c);
            }
        }
        return filteredText.ToString();
    }
    public
    private static void TestFilterDigits()
    {
        string[] testInputs = { "Hello123", "NoDigitsHere!", "1234567890", "Mix4ed5TextWith6Digits7" };
        string[] expectedOutputs = { "Hello", "NoDigitsHere!", "", "MixedTextWithDigits" };
        for (int i = 0; i < testInputs.Length; i++)
        {
            string result = FilterDigits(testInputs[i]);
            Console.WriteLine($"Test {i + 1}: Input = {testInputs[i]}, Expected = {expectedOutputs[i]}, Result = {result}");
            if (result == expectedOutputs[i])
            {
                Console.WriteLine("Test Passed!");
            }
            else
            {
                Console.WriteLine("Test Failed.");
            }
        }
    }
}

想象一下，你正在开发一个文本处理工具，你需要创建一个函数，从给定的字符串中过滤掉所有的数字，只保留字母和其他字符。这个函数应该是高效的，并且可以处理任何长度或内容的字符串输入。编写一个完整的、独立的 C# 程序，其中包含这个函数。确保在代码片段的开头包含所有必要的导入。此外，提供一种方法来测试这个函数，使用各种字符串以确保其正确性。测试方法应该验证输出字符串确实不包含数字，并且与预期结果匹配。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextFilter
{
    public
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class ListFormatterTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test 1
        var test1 = ListFormatter.InsertSeparator(new List<string>{"apple", "banana", "cherry"}, ",");
        if (test1.Count != 5 || test1[1] != "," || test1[3] != ",")
        {
            Console.WriteLine("Test 1: Fail");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 1: Pass");
        }

        // Test 2
        var test2 = ListFormatter.InsertSeparator(new List<string>{"hello", "world"}, " ");
        if (test2.Count != 3 || test2[1] != " ")
        {
            Console.WriteLine("Test 2: Fail");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 2: Pass");
        }

        // Test 3
        var test3 = ListFormatter.InsertSeparator(new List<string>{"one"}, "-");
        if (test3.Count != 1 || test3[0] != "one")
        {
            Console.WriteLine("Test 3: Fail");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 3: Pass");
        }

        // Test 4
        var test4 = ListFormatter.InsertSeparator(new List<string>{}, ";");
        if (test4.Count != 0)
        {
            Console.WriteLine("Test 4: Fail");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 4: Pass");
        }

        // Test 5
        var test5 = ListFormatter.InsertSeparator(new List<string>{"a", "b", "c", "d"}, ", ");
        if (test5.Count != 7 || test5[1] != ", " || test5[3] != ", " || test5[5] != ", ")
        {
            Console.WriteLine("Test 5: Fail");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 5: Pass");
        }

        return allTestsPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class ListFormatter
{
    public static List<string> InsertSeparator(List<string> items, string separator)
    {
        if (items == null || items.Count == 0)
            return new List<string>();
        List<string> formattedList = new List<string>();
        for (int i = 0; i < items.Count; i++)
        {
            formattedList.Add(items[i]);
            if (i < items.Count - 1)
            {
                formattedList.Add(separator);
            }
        }
        return formattedList;
    }
    public static void TestInsertSeparator()
    {
        var test1 = InsertSeparator(new List<string>{"apple", "banana", "cherry"}, ",");
        Console.WriteLine($"Test 1: {(test1.Count == 5 && test1[1] == "," && test1[3] == "," ? "Pass" : "Fail")}");
        var test2 = InsertSeparator(new List<string>{"hello", "world"}, " ");
        Console.WriteLine($"Test 2: {(test2.Count == 3 && test2[1] == " " ? "Pass" : "Fail")}");
        var test3 = InsertSeparator(new List<string>{}, ",");
        Console.WriteLine($"Test 3: {(test3.Count == 0 ? "Pass" : "Fail")}");
    }

}

想象你正在一个项目中，需要通过在每个项目之间添加特定的分隔符来格式化一个项目列表。比如，你有一个单词列表，并且你想在每个单词之间插入一个逗号 `,` 以创建一个逗号分隔的列表。然而，要求是分隔符不应出现在列表的末尾。你能用 C# 写一个完成此任务的函数吗？该函数应有两个参数：一个表示单词列表的字符串列表和一个表示分隔符的字符串。它应返回一个正确插入分隔符的新列表。确保用几个例子来测试你的函数。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ListFormatter
{
    public static List<string> InsertSeparator(List<string> items, string separator)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class NumberSorterTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        string test1Input = "three one five";
        string test1Expected = "one three five";
        string test1Result = NumberSorter.SortWordNumbers(test1Input);
        if (test1Result != test1Expected) {
            Console.WriteLine($"Test 1 Failed: Expected '{test1Expected}', but got '{test1Result}'");
            allTestsPassed = false;
        }

        // Test case 2
        string test2Input = "nine eight seven";
        string test2Expected = "seven eight nine";
        string test2Result = NumberSorter.SortWordNumbers(test2Input);
        if (test2Result != test2Expected) {
            Console.WriteLine($"Test 2 Failed: Expected '{test2Expected}', but got '{test2Result}'");
            allTestsPassed = false;
        }

        // Test case 3
        string test3Input = "zero four two";
        string test3Expected = "zero two four";
        string test3Result = NumberSorter.SortWordNumbers(test3Input);
        if (test3Result != test3Expected) {
            Console.WriteLine($"Test 3 Failed: Expected '{test3Expected}', but got '{test3Result}'");
            allTestsPassed = false;
        }

        // Test case 4
        string test4Input = "six three one";
        string test4Expected = "one three six";
        string test4Result = NumberSorter.SortWordNumbers(test4Input);
        if (test4Result != test4Expected) {
            Console.WriteLine($"Test 4 Failed: Expected '{test4Expected}', but got '{test4Result}'");
            allTestsPassed = false;
        }

        // Test case 5
        string test5Input = "five four three two one";
        string test5Expected = "one two three four five";
        string test5Result = NumberSorter.SortWordNumbers(test5Input);
        if (test5Result != test5Expected) {
            Console.WriteLine($"Test 5 Failed: Expected '{test5Expected}', but got '{test5Result}'");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed successfully.");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class NumberSorter {
    public static string SortWordNumbers(string inputWords) {
        Dictionary<string, int> numberMap = new Dictionary<string, int> {
            {"zero", 0}, {"one", 1}, {"two", 2}, {"three", 3}, {"four", 4},
            {"five", 5}, {"six", 6}, {"seven", 7}, {"eight", 8}, {"nine", 9}
        };
        string sortedWords = String.Join(" ", inputWords.Split(' ')
            .OrderBy(word => numberMap[word])
            .ToArray());
        return sortedWords;
    }
    public static void Check() {
        Debug.Assert(SortWordNumbers("three one five") == "one three five");
        Debug.Assert(SortWordNumbers("nine eight seven") == "seven eight nine");
        Debug.Assert(SortWordNumbers("zero four two") == "zero two four");
        Console.WriteLine("All tests passed successfully.");
    }
}
class Program {

}

想象一下，你正在编写一个程序，该程序需要处理一个表示数字的英文单词列表，并根据其数值对它们进行排序。你会收到一个包含这些单词的字符串，每个单词之间用空格分隔。这些单词将代表从 'zero' 到 'nine' 的数字。你的任务是编写一个函数，根据它们的数值以升序对这些单词进行排序，并返回一个包含排序后单词的新字符串，仍然用空格分隔。例如，如果你收到字符串 "three one five"，你的函数应返回 "one three five"。你能编写一个函数来完成这个任务吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class NumberSorter
{
    public static string SortWordNumbers(string inputWords) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class PhoneticConverterTest
{
    public static int Main(string[] args)
    {
        var testCases = new Dictionary<List<int>, List<string>>()
        {
            { new List<int>{ 12, 45, 67, 89, 23 }, new List<string>{ "One Two", "Two Three", "Four Five", "Six Seven", "Eight Nine" } },
            { new List<int>(), new List<string>() },
            { new List<int>{ 5, 103, 70 }, new List<string>{ "Seven Zero" } },
            { new List<int>{ 10, 99, 11, 12, 13 }, new List<string>{ "One Zero", "One One", "One Two", "One Three", "Nine Nine" } },
            { new List<int>{ 99, 10, 55, 77, 33 }, new List<string>{ "One Zero", "Three Three", "Five Five", "Seven Seven", "Nine Nine" } }
        };

        int result = 0;
        foreach (var testCase in testCases)
        {
            var output = PhoneticConverter.ConvertToPhonetic(testCase.Key);
            if (output.SequenceEqual(testCase.Value))
            {
                Console.WriteLine("Test passed.");
            }
            else
            {
                Console.WriteLine("Test failed.");
                result = -1;
            }
        }

        return result;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class PhoneticConverter
{
    public static List<string> ConvertToPhonetic(List<int> numbers)
    {
        string[] digitWords = { "Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };
        List<string> result = new List<string>();
        foreach (int number in numbers.Where(num => num >= 10 && num <= 99).OrderBy(num => num))
        {
            string phonetic = "";
            phonetic += digitWords[number / 10] + " " + digitWords[number % 10];
            result.Add(phonetic);
        }
        return result;
    }
    public static void Check()
    {
        var testCases = new Dictionary<List<int>, List<string>>()
        {
            { new List<int>{ 12, 45, 67, 89, 23 }, new List<string>{ "One Two", "Two Three", "Four Five", "Six Seven", "Eight Nine" } },
            { new List<int>(), new List<string>() },
            { new List<int>{ 5, 103, 70 }, new List<string>{ "Seven Zero" } }
        };
        foreach (var testCase in testCases)
        {
            var output = ConvertToPhonetic(testCase.Key);
            if (output.SequenceEqual(testCase.Value))
            {
                Console.WriteLine("Test passed.");
            }
            else
            {
                Console.WriteLine("Test failed.");
            }
        }
    }
}
class Program
{

}

你能写一个方法，该方法接受一个整数列表作为输入，筛选出不在10到99（包括边界）范围内的数字，对这些数字进行升序排序，然后将每个数字转换为相应的音标表示吗？例如，10应该转换为“One Zero”，34应该转换为“Three Four”，依此类推，到99为止。然后，该方法应返回这些音标字符串的列表。如果输入列表为空，你的方法应返回一个空列表。忽略任何超出指定范围的数字。

例如：
- 如果输入是`[12, 45, 67, 89, 23]`，输出应为`["One Two", "Two Three", "Four Five", "Six Seven", "Eight Nine"]`。
- 对于空列表输入`[]`，只需返回空列表`[]`。
- 如果输入包含不在10到99范围内的数字，例如`[5, 103, 70]`，则该方法应只处理并返回`["Seven Zero"]`。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class PhoneticConverter
{
    public static List<string> ConvertToPhonetic(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class WordFrequencyAnalyzerTest
{
    public static int Main(string[] args)
    {
        var testCases = new List<Tuple<string, Dictionary<string, int>>>
        {
            new Tuple<string, Dictionary<string, int>>("Apple banana apple", new Dictionary<string, int> { { "apple", 2 } }),
            new Tuple<string, Dictionary<string, int>>("Dog cat mouse cat dog", new Dictionary<string, int> { { "dog", 2 }, { "cat", 2 } }),
            new Tuple<string, Dictionary<string, int>>("One two three two three three", new Dictionary<string, int> { { "three", 3 } }),
            new Tuple<string, Dictionary<string, int>>("Hello world hello", new Dictionary<string, int> { { "hello", 2 } }),
            new Tuple<string, Dictionary<string, int>>("A B C A B C", new Dictionary<string, int> { { "a", 2 }, { "b", 2 }, { "c", 2 } })
        };

        int testPassed = 0;

        foreach (var testCase in testCases)
        {
            var result = WordFrequencyAnalyzer.GetMostFrequentWords(testCase.Item1);
            if (result.SequenceEqual(testCase.Item2))
            {
                testPassed++;
            }
            else
            {
                Console.WriteLine($"Test failed for input: {testCase.Item1}");
                Console.WriteLine($"Expected: {string.Join(", ", testCase.Item2.Select(kv => $"{kv.Key}: {kv.Value}"))}");
                Console.WriteLine($"Actual: {string.Join(", ", result.Select(kv => $"{kv.Key}: {kv.Value}"))}");
            }
        }

        if (testPassed == testCases.Count)
        {
            Console.WriteLine("All tests passed.");
            return 0;
        }
        else
        {
            Console.WriteLine($"{testPassed} out of {testCases.Count} tests passed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class WordFrequencyAnalyzer
{
    public static Dictionary<string, int> GetMostFrequentWords(string sentence)
    {
        var words = sentence.ToLower().Split(' ');
        var wordCounts = new Dictionary<string, int>();
        foreach (var word in words)
        {
            if (!string.IsNullOrWhiteSpace(word))
            {
                if (wordCounts.ContainsKey(word))
                {
                    wordCounts[word]++;
                }
                else
                {
                    wordCounts[word] = 1;
                }
            }
        }
        int maxCount = wordCounts.Values.Count > 0 ? wordCounts.Values.Max() : 0;
        return wordCounts.Where(pair => pair.Value == maxCount).ToDictionary(pair => pair.Key, pair => pair.Value);
    }
    : {kv.Value}")));
        Console.WriteLine("Test 2: " + string.Join(", ", GetMostFrequentWords(test2).Select(kv => $"{kv.Key}: {kv.Value}")));
        Console.WriteLine("Test 3: " + string.Join(", ", GetMostFrequentWords(test3).Select(kv => $"{kv.Key}: {kv.Value}")));
    }
}

你需要编写一个C#程序，用于分析一个句子并识别其中出现频率最高的单词。句子将作为一个包含用空格分隔的单词的字符串提供。你的程序应该返回一个字典，其中键是出现频率最高的单词，值是这些单词的出现次数。如果有多个单词具有相同的最高频率，则将所有这些单词包含在字典中。输入字符串中的单词不区分大小写，输出中的单词应为小写形式。

例如，如果输入是 "Apple banana apple"，输出应该是一个包含 {"apple", 2} 的字典，因为 'apple'（不区分大小写）出现了两次，比其他任何单词都多。如果输入是 "Dog cat mouse cat dog"，输出应该是 {"dog", 2}, {"cat", 2}，因为 'dog' 和 'cat' 都出现了两次，这是这个句子中最高的频率。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class WordFrequencyAnalyzer
{
    public static Dictionary<string, int> GetMostFrequentWords(string sentence)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class MusicTranslatorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        string input1 = "W H- Q- H-";
        List<int> expected1 = new List<int> { 4, 2, 1, 2 };
        List<int> result1 = MusicTranslator.TranslateNotesToBeats(input1);
        allTestsPassed &= result1.SequenceEqual(expected1);

        // Test case 2
        string input2 = "Q- Q- Q- Q-";
        List<int> expected2 = new List<int> { 1, 1, 1, 1 };
        List<int> result2 = MusicTranslator.TranslateNotesToBeats(input2);
        allTestsPassed &= result2.SequenceEqual(expected2);

        // Test case 3
        string input3 = "W W W";
        List<int> expected3 = new List<int> { 4, 4, 4 };
        List<int> result3 = MusicTranslator.TranslateNotesToBeats(input3);
        allTestsPassed &= result3.SequenceEqual(expected3);

        // Test case 4
        string input4 = "H- Q- W";
        List<int> expected4 = new List<int> { 2, 1, 4 };
        List<int> result4 = MusicTranslator.TranslateNotesToBeats(input4);
        allTestsPassed &= result4.SequenceEqual(expected4);

        // Test case 5
        string input5 = "W H- Q- H- H- Q- Q- Q- Q- W W";
        List<int> expected5 = new List<int> { 4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4 };
        List<int> result5 = MusicTranslator.TranslateNotesToBeats(input5);
        allTestsPassed &= result5.SequenceEqual(expected5);

        if (allTestsPassed) {
            Console.WriteLine("All tests passed.");
            return 0;
        } else {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class MusicTranslator {
    public static List<int> TranslateNotesToBeats(string notes) {
        List<int> durations = new List<int>();
        string[] noteSymbols = notes.Split(' ');
        foreach (string symbol in noteSymbols) {
            switch (symbol) {
                case "W":
                    durations.Add(4);
                    break;
                case "H-":
                    durations.Add(2);
                    break;
                case "Q-":
                    durations.Add(1);
                    break;
                default:
                    throw new ArgumentException("Invalid note symbol encountered.");
            }
        }
        return durations;
    }
    public static void Check() {
        string input = "W H- Q- H- H- Q- Q- Q- Q- W W";
        List<int> expected = new List<int> { 4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4 };
        List<int> result = TranslateNotesToBeats(input);
        Console.WriteLine($"Input: {input}");
        Console.WriteLine($"Expected: [{string.Join(", ", expected)}]");
        Console.WriteLine($"Result: [{string.Join(", ", result)}]");
        if (expected.SequenceEqual(result)) {
            Console.WriteLine("The method is correct.");
        } else {
            Console.WriteLine("The method is incorrect.");
        }
    }

}

想象一下，你正在为一个音乐教育应用程序开发一个功能，帮助用户以简单和直观的方式理解不同乐谱符号的时值。你决定用字符串格式将音乐符号表示出来，现在你需要编写一个方法，将这个字符串翻译成一个时值列表，每个时值对应一个音符持续的拍数。音符的符号如下：

- 'W' 代表全音符，持续4拍。
- 'H-' 代表二分音符，持续2拍。
- 'Q-' 代表四分音符，持续1拍。

编写一个方法 `TranslateNotesToBeats`，该方法接受一个由上述符号表示的音符字符串，并返回一个整数列表，其中每个整数表示输入字符串中相应音符的时值。

例如，给定输入字符串 `"W H- Q- H- H- Q- Q- Q- Q- W W"`，你的方法应该返回整数列表 `[4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4]`。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class MusicTranslator
{
    public static List<int> TranslateNotesToBeats(string notes) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class MathOperationsTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        MathOperations.VerifyResult(2, 3, 6);
        if (MathOperations.MultiplyNumbers(2, 3) != 6) allTestsPassed = false;

        // Test case 2
        MathOperations.VerifyResult(5, 4, 20);
        if (MathOperations.MultiplyNumbers(5, 4) != 20) allTestsPassed = false;

        // Test case 3
        MathOperations.VerifyResult(10, 5, 50);
        if (MathOperations.MultiplyNumbers(10, 5) != 50) allTestsPassed = false;

        // Test case 4
        MathOperations.VerifyResult(7, 0, 0);
        if (MathOperations.MultiplyNumbers(7, 0) != 0) allTestsPassed = false;

        // Test case 5
        MathOperations.VerifyResult(1, 1, 1);
        if (MathOperations.MultiplyNumbers(1, 1) != 1) allTestsPassed = false;

        if (allTestsPassed) {
            Console.WriteLine("All tests passed.");
            return 0;
        } else {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class MathOperations {
    public static int MultiplyNumbers(int x, int y) {
        return x * y;
    }
    public static void VerifyResult(int x, int y, int expected) {
        int result = MultiplyNumbers(x, y);
        if (result == expected) {
            Console.WriteLine("Test Passed");
        } else {
            Console.WriteLine($"Test Failed: Expected {expected}, but got {result}");
        }
    }

}

你能写一个C#程序来将两个数字相乘并返回结果吗？该程序应包含一个名为`MultiplyNumbers`的方法，该方法接受两个整数参数，将它们相乘，然后返回乘积。为了确保该方法按预期工作，请包含一个静态方法`VerifyResult`，该方法接受两个整数（乘法的输入）和预期的乘积。此方法应调用`MultiplyNumbers`并使用提供的输入检查返回的结果是否匹配预期的乘积，打印"Test Passed"或"Test Failed"。

以下是代码应如何工作的示例：
- 如果你调用`VerifyResult(2, 3, 6)`，应打印"Test Passed"，因为2 * 3 = 6。
- 如果你调用`VerifyResult(5, 4, 20)`，也应打印"Test Passed"。

确保你的代码是自包含的，并在开始时导入任何必要的包。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class MathOperations
{
    public static int MultiplyNumbers(int x, int y) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class HexConverterTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        if (HexConverter.IntToHexWithPrefixSuffix(255) != "hxffhx") {
            Console.WriteLine("Test case 1 failed.");
            allTestsPassed = false;
        }

        // Test case 2
        if (HexConverter.IntToHexWithPrefixSuffix(16) != "hx10hx") {
            Console.WriteLine("Test case 2 failed.");
            allTestsPassed = false;
        }

        // Test case 3
        if (HexConverter.IntToHexWithPrefixSuffix(4095) != "hxfffhx") {
            Console.WriteLine("Test case 3 failed.");
            allTestsPassed = false;
        }

        // Test case 4
        if (HexConverter.IntToHexWithPrefixSuffix(0) != "hx0hx") {
            Console.WriteLine("Test case 4 failed.");
            allTestsPassed = false;
        }

        // Test case 5
        if (HexConverter.IntToHexWithPrefixSuffix(1) != "hx1hx") {
            Console.WriteLine("Test case 5 failed.");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed successfully.");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class HexConverter {
    public static string IntToHexWithPrefixSuffix(int number) {
        string hexValue = number.ToString("X");
        return $"hx{hexValue.ToLower()}hx";
    }
    public static void CheckFunction() {
        Debug.Assert(IntToHexWithPrefixSuffix(255) == "hxffhx");
        Debug.Assert(IntToHexWithPrefixSuffix(16) == "hx10hx");
        Debug.Assert(IntToHexWithPrefixSuffix(4095) == "hxfffhx");
        Console.WriteLine("All tests passed successfully.");
    }

}

你能写一个 C# 程序，接受一个整数作为输入并将其转换为十六进制表示形式，但有一个特殊的要求吗？输出字符串应该在实际十六进制字符串的前面和后面加上"hx"。例如，如果输入是255，输出应为"hxffhx"，而对于16，则应为"hx10hx"。确保在代码片段的开头包含所有必要的导入，并且代码易于理解和自包含。此外，包含一个函数来验证给定测试用例的解决方案。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class HexConverter
{
    public static string IntToHexWithPrefixSuffix(int number) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class EmployeeManagementTest
{
    public static int Main()
    {
        bool allTestsPassed = true;

        // Test case 1
        var result1 = EmployeeManagement.FindSecondHighestSalary(new List<int> { 60000, 50000, 80000, 90000 });
        if (result1 != 80000)
        {
            Console.WriteLine("Test case 1 failed.");
            allTestsPassed = false;
        }

        // Test case 2
        var result2 = EmployeeManagement.FindSecondHighestSalary(new List<int> { 45000 });
        if (result2 != null)
        {
            Console.WriteLine("Test case 2 failed.");
            allTestsPassed = false;
        }

        // Test case 3
        var result3 = EmployeeManagement.FindSecondHighestSalary(new List<int>());
        if (result3 != null)
        {
            Console.WriteLine("Test case 3 failed.");
            allTestsPassed = false;
        }

        // Test case 4
        var result4 = EmployeeManagement.FindSecondHighestSalary(new List<int> { 90000, 90000 });
        if (result4 != null)
        {
            Console.WriteLine("Test case 4 failed.");
            allTestsPassed = false;
        }

        // Test case 5
        var result5 = EmployeeManagement.FindSecondHighestSalary(new List<int> { 10000, 10000, 20000, 20000, 30000 });
        if (result5 != 20000)
        {
            Console.WriteLine("Test case 5 failed.");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All test cases passed.");
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class EmployeeManagement
{
    public static Nullable<int> FindSecondHighestSalary(List<int> salaries)
    {
        if (salaries == null || salaries.Count < 2)
        {
            return null;
        }
        var uniqueSalaries = salaries.Distinct().OrderByDescending(salary => salary).ToList();
        if(uniqueSalaries.Count < 2)
        {
            return null;
        }
        return uniqueSalaries[1];
    }
    public ));
        Console.WriteLine(FindSecondHighestSalary(new List<int>{45000}));
        Console.WriteLine(FindSecondHighestSalary(new List<int>()));
        Console.WriteLine(FindSecondHighestSalary(new List<int>{90000, 90000}));
    }
}

你正从事一个涉及管理员工记录的项目。你需要一个函数，帮助你找到数据集中薪资第二高的员工的薪水。你的数据集是一个员工薪水的列表（全是唯一值）。编写一个名为 `FindSecondHighestSalary` 的函数，该函数返回列表中第二高的薪水。如果列表中至少没有两个唯一的薪水值，函数应返回 `null`。

函数的工作方式如下：

- 如果列表包含 `[60000, 50000, 80000, 90000]`，你的函数应返回 `80000`。
- 对于像 `[45000]` 这样的列表，因为没有第二高的薪水，你的函数应返回 `null`。
- 同样，如果列表为空，返回 `null`。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class EmployeeManagement
{
    public ));
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text;

#<INSERT>

class EvenNumberGeneratorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1
        if (EvenNumberGenerator.EvenNumbersList(10) != "2,4,6,8,10") {
            Console.WriteLine("Test 1 Failed");
            allTestsPassed = false;
        } else {
            Console.WriteLine("Test 1 Passed");
        }

        // Test Case 2
        if (EvenNumberGenerator.EvenNumbersList(15) != "2,4,6,8,10,12,14") {
            Console.WriteLine("Test 2 Failed");
            allTestsPassed = false;
        } else {
            Console.WriteLine("Test 2 Passed");
        }

        // Test Case 3
        if (EvenNumberGenerator.EvenNumbersList(1) != "") {
            Console.WriteLine("Test 3 Failed");
            allTestsPassed = false;
        } else {
            Console.WriteLine("Test 3 Passed");
        }

        // Test Case 4
        if (EvenNumberGenerator.EvenNumbersList(2) != "2") {
            Console.WriteLine("Test 4 Failed");
            allTestsPassed = false;
        } else {
            Console.WriteLine("Test 4 Passed");
        }

        return allTestsPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text;
class EvenNumberGenerator {
    public static string EvenNumbersList(int n) {
        if (n < 2) return "";
        StringBuilder result = new StringBuilder();
        for (int i = 2; i <= n; i += 2) {
            result.Append(i);
            if (i < n - 1) {
                result.Append(",");
            }
        }
        return result.ToString();
    }
    public static void TestEvenNumbersList() {
        Console.WriteLine(EvenNumbersList(10) == "2,4,6,8,10" ? "Test 1 Passed" : "Test 1 Failed");
        Console.WriteLine(EvenNumbersList(15) == "2,4,6,8,10,12,14" ? "Test 2 Passed" : "Test 2 Failed");
        Console.WriteLine(EvenNumbersList(1) == "" ? "Test 3 Passed" : "Test 3 Failed");
        Console.WriteLine(EvenNumbersList(2) == "2" ? "Test 4 Passed" : "Test 4 Failed");
    }

}

你能写一个C#程序生成一个以逗号分隔的从2开始到指定数字（包括该数字）之间的偶数列表吗？该程序应能够处理指定数字为偶数和奇数的情况。如果指定数字小于2，程序应返回一个空字符串。请确保在你的代码片段的开头包含必要的导入。为了验证你的解决方案，请附带一个用各种输入测试你的程序的函数。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class EvenNumberGenerator
{
    public static string EvenNumbersList(int n) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class OddNumberFilterTest {
    public static int Main(string[] args) {
        int result = 0;

        // Test Case 1
        var testList1 = new List<int>{4, 7, 9, 12, 15, 18};
        var expectedOutput1 = new List<int>{7, 9, 15};
        var actualOutput1 = OddNumberFilter.GetOddNumbers(testList1);
        if (!expectedOutput1.SequenceEqual(actualOutput1)) {
            Console.WriteLine("Test Case 1 Failed");
            result = -1;
        }

        // Test Case 2
        var testList2 = new List<int>{1, 3, 5, 7, 9};
        var expectedOutput2 = new List<int>{1, 3, 5, 7, 9};
        var actualOutput2 = OddNumberFilter.GetOddNumbers(testList2);
        if (!expectedOutput2.SequenceEqual(actualOutput2)) {
            Console.WriteLine("Test Case 2 Failed");
            result = -1;
        }

        // Test Case 3
        var testList3 = new List<int>{2, 4, 6, 8, 10};
        var expectedOutput3 = new List<int>{};
        var actualOutput3 = OddNumberFilter.GetOddNumbers(testList3);
        if (!expectedOutput3.SequenceEqual(actualOutput3)) {
            Console.WriteLine("Test Case 3 Failed");
            result = -1;
        }

        // Test Case 4
        var testList4 = new List<int>{-3, -2, -1, 0, 1, 2, 3};
        var expectedOutput4 = new List<int>{-3, -1, 1, 3};
        var actualOutput4 = OddNumberFilter.GetOddNumbers(testList4);
        if (!expectedOutput4.SequenceEqual(actualOutput4)) {
            Console.WriteLine("Test Case 4 Failed");
            result = -1;
        }

        return result;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class OddNumberFilter {
    public static List<int> GetOddNumbers(List<int> numbers) {
        return numbers.Where(number => number % 2 != 0).ToList();
    }
    public static void Check() {
        var testList = new List<int>{4, 7, 9, 12, 15, 18};
        var expectedOutput = new List<int>{7, 9, 15};
        var actualOutput = GetOddNumbers(testList);
        Console.WriteLine($"Expected: [{String.Join(", ", expectedOutput)}]");
        Console.WriteLine($"Actual: [{String.Join(", ", actualOutput)}]");
        Debug.Assert(expectedOutput.SequenceEqual(actualOutput), "The GetOddNumbers method did not return the expected output.");
    }

}

你能写一个C#方法，从给定的整数列表中过滤出所有的偶数，只返回奇数吗？该方法应接受一个整数列表作为参数，并返回一个新的列表，其中仅包含原始列表中的奇数。

例如，如果输入列表是 `[4, 7, 9, 12, 15, 18]`，该方法应返回 `[7, 9, 15]`，因为这些是给定列表中的奇数。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class OddNumberFilter
{
    public static List<int> GetOddNumbers(List<int> numbers) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class DataAnalysisTest
{
    public static bool TestCalculateStandardDeviation(List<int> input, double expected)
    {
        try
        {
            double result = DataAnalysis.CalculateStandardDeviation(input);
            return Math.Abs(result - expected) < 1e-6;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Test failed with exception: {ex.Message}");
            return false;
        }
    }

    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1: Simple list of integers
        allTestsPassed &= TestCalculateStandardDeviation(new List<int> { 1, 2, 3, 4, 5 }, 1.4142135623730951);

        // Test Case 2: List with all identical elements
        allTestsPassed &= TestCalculateStandardDeviation(new List<int> { 5, 5, 5, 5, 5 }, 0.0);

        // Test Case 3: List with a larger range of values
        allTestsPassed &= TestCalculateStandardDeviation(new List<int> { 10, 20, 30, 40, 50 }, 14.142135623730951);

        // Test Case 4: List with negative values
        allTestsPassed &= TestCalculateStandardDeviation(new List<int> { -1, -2, -3, -4, -5 }, 1.4142135623730951);

        return allTestsPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class DataAnalysis
{
    public static double CalculateStandardDeviation(List<int> numbers)
    {
        if (numbers == null || numbers.Count == 0)
        {
            throw new ArgumentException("The numbers list cannot be null or empty.", nameof(numbers));
        }
        double mean = numbers.Average();
        double sumOfSquaredDifferences = numbers.Select(num => (num - mean) * (num - mean)).Sum();
        double standardDeviation = Math.Sqrt(sumOfSquaredDifferences / numbers.Count);
        return standardDeviation;
    }
    public ;
        double stdDeviation = CalculateStandardDeviation(sampleData);
        Console.WriteLine($"The Standard Deviation is: {stdDeviation}");
    }
}

嘿，你能帮我弄清楚如何计算一组数字的标准差吗？我有一个整数列表，我需要找到标准差来了解这些数字与平均值的离散程度。这是我正在做的一个项目的一部分，其中准确测量这种离散程度对于数据分析部分至关重要。你能展示一下如何编写一个可以进行此计算的C#程序吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DataAnalysis
{
    public ;
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text.RegularExpressions;

#<INSERT>

class TextFilterTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        string result1 = TextFilter.RemoveDigits("Hello123World!");
        if (result1 != "HelloWorld!")
        {
            Console.WriteLine("Test 1 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 1 Passed");
        }

        // Test Case 2
        string result2 = TextFilter.RemoveDigits("2023NewYear!");
        if (result2 != "NewYear!")
        {
            Console.WriteLine("Test 2 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 2 Passed");
        }

        // Test Case 3
        string result3 = TextFilter.RemoveDigits("NoDigitsHere");
        if (result3 != "NoDigitsHere")
        {
            Console.WriteLine("Test 3 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 3 Passed");
        }

        // Test Case 4
        string result4 = TextFilter.RemoveDigits("1234567890");
        if (result4 != "")
        {
            Console.WriteLine("Test 4 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 4 Passed");
        }

        // Test Case 5
        string result5 = TextFilter.RemoveDigits("!@#$%^&*()");
        if (result5 != "!@#$%^&*()")
        {
            Console.WriteLine("Test 5 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 5 Passed");
        }

        if (allTestsPassed)
        {
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text.RegularExpressions;
class TextFilter
{
    public static string RemoveDigits(string input)
    {
        return Regex.Replace(input, @"\d", "");
    }

    private static void CheckFunction()
    {
        Console.WriteLine(RemoveDigits("Hello123World!") == "HelloWorld!" ? "Test 1 Passed" : "Test 1 Failed");
        Console.WriteLine(RemoveDigits("2023NewYear!") == "NewYear!" ? "Test 2 Passed" : "Test 2 Failed");
        Console.WriteLine(RemoveDigits("NoDigitsHere") == "NoDigitsHere" ? "Test 3 Passed" : "Test 3 Failed");
    }
}

想象一下，你正在开发一个文本处理工具，你的任务是创建一个函数，从给定的字符串中过滤掉所有数字，只保留非数字字符。这个函数应接受一个字符串作为输入，并返回一个新字符串，该字符串仅包含原始字符串中的字母和特殊字符，所有数字被去除。例如，如果输入字符串是"Hello123World!"，该函数应返回"HelloWorld!"。

编写一个包含此功能的独立的C#程序。确保在代码片段的开头包含所有必要的导入。另外，设计一个检查函数，并提供数据点来验证你的解决方案的正确性。目标是使代码片段和函数名称与给定的Rust代码片段尽可能不同。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextFilter
{
    public static string RemoveDigits(string input)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class TransactionValidatorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1
        bool result1 = TransactionValidator.HasPrimeDigit(2347);
        if (result1 != true) {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        bool result2 = TransactionValidator.HasPrimeDigit(4680);
        if (result2 != false) {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        bool result3 = TransactionValidator.HasPrimeDigit(1111);
        if (result3 != false) {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        bool result4 = TransactionValidator.HasPrimeDigit(3579);
        if (result4 != true) {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5
        bool result5 = TransactionValidator.HasPrimeDigit(2024);
        if (result5 != true) {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All test cases passed!");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class TransactionValidator {
    public static bool HasPrimeDigit(long transactionId) {
        string transactionIdStr = transactionId.ToString();
        foreach (char digit in transactionIdStr) {
            if (digit == '2' || digit == '3' || digit == '5' || digit == '7') {
                return true;
            }
        }
        return false;
    }
    public static void CheckFunction() {
        Debug.Assert(HasPrimeDigit(2347) == true, "2347 contains prime digits.");
        Debug.Assert(HasPrimeDigit(4680) == false, "4680 does not contain any prime digits.");
        Debug.Assert(HasPrimeDigit(1111) == false, "1111 does not contain any prime digits.");
        Debug.Assert(HasPrimeDigit(3579) == true, "3579 contains prime digits.");
        Console.WriteLine("All test cases passed!");
    }

}

假设你在处理一个需要根据特定标准分析交易ID以确保其有效性的金融应用程序。你的任务是编写一个C#方法，识别给定的交易ID（表示为长整数）是否包含至少一个素数数字（2、3、5或7）。如果交易ID中至少包含一个素数数字，方法应返回`true`，否则返回`false`。例如，一个交易ID为`2347`应该返回`true`，因为它包含素数数字2、3和7，而一个交易ID为`4680`应该返回`false`，因为它不包含任何素数数字。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TransactionValidator
{
    public static bool HasPrimeDigit(long transactionId) {
    {
        // Implement your code here.
    }
}
```


using System;
using System.Globalization;

#<INSERT>

public class ValueComparerTest
{
    public static int Main()
    {
        bool allTestsPassed = true;

        // Test case 1: Integer comparison
        if (!CompareAndCheck(5, 10, 10))
        {
            allTestsPassed = false;
            Console.WriteLine("Test case 1 failed.");
        }

        // Test case 2: Floating-point comparison
        if (!CompareAndCheck(5.5, 3.3, 5.5))
        {
            allTestsPassed = false;
            Console.WriteLine("Test case 2 failed.");
        }

        // Test case 3: String that represents numbers (dot as decimal separator)
        if (!CompareAndCheck("2.5", "2.55", "2.55"))
        {
            allTestsPassed = false;
            Console.WriteLine("Test case 3 failed.");
        }

        // Test case 4: String that represents numbers (comma as decimal separator)
        if (!CompareAndCheck("3,14", "3,1", "3,14"))
        {
            allTestsPassed = false;
            Console.WriteLine("Test case 4 failed.");
        }

        // Test case 5: Equal values
        if (!CompareAndCheck("100", 100, "None"))
        {
            allTestsPassed = false;
            Console.WriteLine("Test case 5 failed.");
        }

        return allTestsPassed ? 0 : -1;
    }

    private static bool CompareAndCheck(object value1, object value2, object expected)
    {
        object result = ValueComparer.CompareValues(value1, value2);
        return result.Equals(expected);
    }
}

using System;
using System.Globalization;

public class ValueComparer
{
    public static object CompareValues(object value1, object value2)
    {
        if (value1 == null || value2 == null)
        {
            throw new ArgumentNullException("Values cannot be null");
        }

        // Convert values to comparable double, if possible
        double doubleValue1, doubleValue2;
        if (TryConvertToDouble(value1, out doubleValue1) && TryConvertToDouble(value2, out doubleValue2))
        {
            if (doubleValue1 > doubleValue2)
            {
                return value1;
            }
            else if (doubleValue1 < doubleValue2)
            {
                return value2;
            }
            else
            {
                return "None";
            }
        }

        // Handle string comparison
        if (value1 is string && value2 is string)
        {
            int stringComparison = string.Compare((string)value1, (string)value2, StringComparison.Ordinal);
            if (stringComparison > 0)
            {
                return value1;
            }
            else if (stringComparison < 0)
            {
                return value2;
            }
            else
            {
                return "None";
            }
        }

        // Handle comparison of other types (e.g., integers)
        if (value1 is IComparable comparable1 && value2 is IComparable comparable2)
        {
            int comparisonResult = comparable1.CompareTo(comparable2);
            if (comparisonResult > 0)
            {
                return value1;
            }
            else if (comparisonResult < 0)
            {
                return value2;
            }
            else
            {
                return "None";
            }
        }

        throw new ArgumentException("Values are not comparable");
    }

    private static bool TryConvertToDouble(object value, out double result)
    {
        if (value is double)
        {
            result = (double)value;
            return true;
        }

        if (value is float)
        {
            result = (float)value;
            return true;
        }

        if (value is int)
        {
            result = (int)value;
            return true;
        }

        if (value is string strValue)
        {
            // Try parsing with dot and comma as decimal separators
            if (double.TryParse(strValue, NumberStyles.Float, CultureInfo.InvariantCulture, out result) ||
                double.TryParse(strValue, NumberStyles.Float, new CultureInfo("fr-FR"), out result))
            {
                return true;
            }
        }

        result = 0;
        return false;
    }
}

想象一下，你正在编写一个需要比较两个值的程序。这些值可以是整数、浮点数，甚至是表示数字的字符串（小数点或逗号作为小数分隔符）。你的任务是编写一个函数，确定两个值中哪个更大，并以其原始形式（类型和格式）返回它。如果两个值相等，函数应返回字符串 "None"。你能设计一个优雅处理不同可能输入类型的比较函数吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ValueComparer
{
public class ValueComparer
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class DataAnalyzerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        List<int> input1 = new List<int> { 5, 3, 6, 2, 4, 1 };
        List<int> expected1 = new List<int> { 5, 3, 3, 2, 2, 1 };
        List<int> result1 = DataAnalyzer.CumulativeMin(input1);
        if (!result1.SequenceEqual(expected1))
        {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        List<int> input2 = new List<int> { 1, 2, 3, 4, 5, 6 };
        List<int> expected2 = new List<int> { 1, 1, 1, 1, 1, 1 };
        List<int> result2 = DataAnalyzer.CumulativeMin(input2);
        if (!result2.SequenceEqual(expected2))
        {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        List<int> input3 = new List<int> { 10, 9, 8, 7, 6, 5 };
        List<int> expected3 = new List<int> { 10, 9, 8, 7, 6, 5 };
        List<int> result3 = DataAnalyzer.CumulativeMin(input3);
        if (!result3.SequenceEqual(expected3))
        {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        List<int> input4 = new List<int> { -1, -3, -2, -5, -4 };
        List<int> expected4 = new List<int> { -1, -3, -3, -5, -5 };
        List<int> result4 = DataAnalyzer.CumulativeMin(input4);
        if (!result4.SequenceEqual(expected4))
        {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5
        List<int> input5 = new List<int> { };
        List<int> expected5 = new List<int> { };
        List<int> result5 = DataAnalyzer.CumulativeMin(input5);
        if (!result5.SequenceEqual(expected5))
        {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All test cases passed.");
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class DataAnalyzer
{
    public static List<int> CumulativeMin(List<int> numbers)
    {
        List<int> cumulativeMins = new List<int>();
        if (numbers.Count == 0)
        {
            return cumulativeMins;
        }
        int currentMin = numbers[0];
        foreach (int number in numbers)
        {
            if (number < currentMin)
            {
                currentMin = number;
            }
            cumulativeMins.Add(currentMin);
        }
        return cumulativeMins;
    }
    ;
        List<int> result = CumulativeMin(sampleData);
        Console.WriteLine("Cumulative minimums: " + string.Join(", ", result));
    }
}

想象一下，你正在开发一个数据分析工具，需要实现一个特性，用于跟踪数字序列中的累积最小值。这个特性应该接受一个整数列表作为输入，并返回一个新的列表，其中每个元素代表到该点为止遇到的最小值。例如，如果输入列表是 `[5, 3, 6, 2, 4, 1]`，输出应该是 `[5, 3, 3, 2, 2, 1]`，这表明在每一步中，迄今为止看到的最小值都会被更新。你将如何用 C# 编写一个函数来完成这个任务？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DataAnalyzer
{
    public static List<int> CumulativeMin(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class ListModifierTest {
    public static int Main(string[] args) {
        var testCases = new List<List<int>> {
            new List<int>{2, 3, 4},
            new List<int>{1, 5, 7, 9},
            new List<int>{0, 0, 0},
            new List<int>{-1, -2, -3},
            new List<int>{10, 20, 30}
        };

        var expectedResults = new List<List<int>> {
            new List<int>{4, 6, 8},
            new List<int>{2, 10, 14, 18},
            new List<int>{0, 0, 0},
            new List<int>{-2, -4, -6},
            new List<int>{20, 40, 60}
        };

        bool allPassed = true;

        for (int i = 0; i < testCases.Count; i++) {
            var result = ListModifier.DoubleElements(testCases[i]);
            if (result.SequenceEqual(expectedResults[i])) {
                Console.WriteLine($"Test case {i + 1}: Passed");
            } else {
                Console.WriteLine($"Test case {i + 1}: Failed");
                allPassed = false;
            }
        }

        return allPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class ListModifier {
    public static List<int> DoubleElements(List<int> inputList) {
        for (int i = 0; i < inputList.Count; i++) {
            inputList[i] *= 2;
        }
        return inputList;
    }
    public static void CheckFunction() {
        var testCases = new List<List<int>> {
            new List<int>{2, 3, 4},
            new List<int>{1, 5, 7, 9},
            new List<int>{0, 0, 0}
        };
        var expectedResults = new List<List<int>> {
            new List<int>{4, 6, 8},
            new List<int>{2, 10, 14, 18},
            new List<int>{0, 0, 0}
        };
        for (int i = 0; i < testCases.Count; i++) {
            var result = DoubleElements(testCases[i]);
            if (result.SequenceEqual(expectedResults[i])) {
                Console.WriteLine($"Test case {i + 1}: Passed");
            } else {
                Console.WriteLine($"Test case {i + 1}: Failed");
            }
        }
    }

}

你能写一个C#方法，将给定整数列表中的每个元素加倍并返回修改后的列表吗？例如，如果你传递一个包含[2, 3, 4]的列表，方法应该返回一个包含[4, 6, 8]的列表。确保你的代码是自包含的，并包含必要的导入。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ListModifier
{
    public static List<int> DoubleElements(List<int> inputList) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class FinancialCalculatorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1
        allTestsPassed &= FinancialCalculator.NearestWholeNumber("10") == 10;

        // Test Case 2
        allTestsPassed &= FinancialCalculator.NearestWholeNumber("15.3") == 15;

        // Test Case 3
        allTestsPassed &= FinancialCalculator.NearestWholeNumber("14.5") == 15;

        // Test Case 4
        allTestsPassed &= FinancialCalculator.NearestWholeNumber("-14.5") == -15;

        // Test Case 5
        allTestsPassed &= FinancialCalculator.NearestWholeNumber("-10.1") == -10;

        return allTestsPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class FinancialCalculator {
    public static long NearestWholeNumber(string value) {
        decimal number = decimal.Parse(value);
        decimal fractionalPart = number % 1;
        if (fractionalPart == 0.5m || fractionalPart == -0.5m) {
            return (long)(number + Math.Sign(number) * 0.5m);
        } else {
            return (long)Math.Round(number);
        }
    }
    public static void Check() {
        Console.WriteLine(NearestWholeNumber("10") == 10);
        Console.WriteLine(NearestWholeNumber("15.3") == 15);
        Console.WriteLine(NearestWholeNumber("14.5") == 15);
        Console.WriteLine(NearestWholeNumber("-14.5") == -15);
    }
}
class Program {

}

想象一下，你正在开发一个金融应用程序，精度至关重要，并且你需要实现一个处理用户输入的功能，这些输入是表示货币值的字符串。你的任务是编写一个方法，该方法接受这些字符串输入，这些输入可以是整数或小数，并将它们转换为最接近的整数。不过，这里有一个变化：如果数字的小数部分正好是0.5，你应该将数字向远离零的方向舍入，意思是2.5变成3，-2.5变成-3。你能设计一个处理这种舍入策略的方法吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class FinancialCalculator
{
    public static long NearestWholeNumber(string value) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Linq;

#<INSERT>

class EvenDigitSumCalculatorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        int result1 = EvenDigitSumCalculator.CalculateEvenDigitSum(246);
        if (result1 != 12) {
            Console.WriteLine($"Test 1 failed: Expected 12, but got {result1}");
            allTestsPassed = false;
        }

        // Test case 2
        int result2 = EvenDigitSumCalculator.CalculateEvenDigitSum(135);
        if (result2 != 0) {
            Console.WriteLine($"Test 2 failed: Expected 0, but got {result2}");
            allTestsPassed = false;
        }

        // Test case 3
        int result3 = EvenDigitSumCalculator.CalculateEvenDigitSum(123456789);
        if (result3 != 20) {
            Console.WriteLine($"Test 3 failed: Expected 20, but got {result3}");
            allTestsPassed = false;
        }

        // Test case 4
        int result4 = EvenDigitSumCalculator.CalculateEvenDigitSum(2222);
        if (result4 != 8) {
            Console.WriteLine($"Test 4 failed: Expected 8, but got {result4}");
            allTestsPassed = false;
        }

        // Test case 5
        int result5 = EvenDigitSumCalculator.CalculateEvenDigitSum(1111);
        if (result5 != 0) {
            Console.WriteLine($"Test 5 failed: Expected 0, but got {result5}");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed successfully.");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Linq;
class EvenDigitSumCalculator {
    public static int CalculateEvenDigitSum(int number) {
        return number.ToString().Where(char.IsDigit).Select(digit => int.Parse(digit.ToString())).Where(digit => digit % 2 == 0).Sum();
    }

}

设想你正在进行一个需要以独特方式分析数字的项目。你的任务是编写一个程序，给定一个正整数，计算其偶数字的和。如果该数字仅包含奇数字，则程序应返回0。这看起来似乎很简单，但这是你的数据分析工具中一个关键的部分。你能否设计一个高效计算这一结果的解决方案？

例如，如果输入数字是246，程序应返回12，因为2 + 4 + 6 = 12。如果输入是135，程序应返回0，因为所有数字都是奇数。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class EvenDigitSumCalculator
{
    public static int CalculateEvenDigitSum(int number) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text.RegularExpressions;

#<INSERT>

class TextFormatterTest {
    static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test cases
        var testCases = new Dictionary<string, string> {
            { "Hello World", "Hello+World" },
            { "  Leading spaces", "*Leading+spaces" },
            { "Trailing spaces  ", "Trailing+spaces*" },
            { "Multiple   spaces", "Multiple*spaces" },
            { "NoExtraSpaces", "NoExtraSpaces" }
        };

        foreach (var testCase in testCases) {
            string input = testCase.Key;
            string expected = testCase.Value;
            string result = TextFormatter.FormatForUrl(input);
            if (result != expected) {
                Console.WriteLine($"Test Failed: Input: '{input}', Expected: '{expected}', Got: '{result}'");
                allTestsPassed = false;
            }
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed!");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text.RegularExpressions;
class TextFormatter {
    public static string FormatForUrl(string input) {
        string result = Regex.Replace(input, @"\s{2,}", "*");
        result = result.Replace(" ", "+");
        return result;
    }

}

想象你在处理一个文本处理应用程序，你需要清理用户输入。具体来说，你的任务是格式化字符串，使其适合 URL。你的挑战是编写一个方法，该方法接受一个字符串作为输入并应用以下转换：

1. 将所有空格替换为加号 (`+`)。
2. 如果字符串包含两个以上连续空格，将所有这些连续的空格替换为一个星号 (`*`)。

例如，如果用户输入一个带有不规则空格的字符串，你的方法应该根据这些规则将其整理，使其更结构化和可预测，以便进一步处理。

你能写一个完成这项任务的 C# 方法吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextFormatter
{
    public static string FormatForUrl(string input) {
    {
        // Implement your code here.
    }
}
```